Add braces around and indent the `zpool status` parsing loop

The switch is one statement, so this doesn't change the actual effect
of the code, but it makes it more clear.  Also, if someone were to try
to add a debugging printf() after the if statement, it would work
correctly. ;)

Index: grub/util/getroot.c
===================================================================
--- grub.orig/util/getroot.c	2012-01-31 00:50:24.000000000 -0600
+++ grub/util/getroot.c	2012-01-31 00:51:15.352398000 -0600
@@ -274,36 +274,38 @@
 	
       if (sscanf (line, " %s %256s %256s %256s %256s %256s",
 		  name, state, readlen, writelen, cksum, notes) >= 5)
-	switch (st)
-	  {
-	  case 0:
-	    if (!strcmp (name, "NAME")
-		&& !strcmp (state, "STATE")
-		&& !strcmp (readlen, "READ")
-		&& !strcmp (writelen, "WRITE")
-		&& !strcmp (cksum, "CKSUM"))
-	      st++;
-	    break;
-	  case 1:
-	    if (!strcmp (name, poolname))
-	      st++;
-	    break;
-	  case 2:
-	    if (strcmp (name, "mirror") && !sscanf (name, "mirror-%u", &dummy)
-		&& !sscanf (name, "raidz%u", &dummy)
-		&& !strcmp (state, "ONLINE"))
-	      {
-		if (ndevices >= devices_allocated)
-		  {
-		    devices_allocated = 2 * (devices_allocated + 8);
-		    devices = xrealloc (devices, sizeof (devices[0])
-					* devices_allocated);
-		  }
-		devices[ndevices++] = xasprintf ("/dev/%s", name);
-	      }
-	    break;
-	  }
-	
+	{
+	  switch (st)
+	    {
+	    case 0:
+	      if (!strcmp (name, "NAME")
+		  && !strcmp (state, "STATE")
+		  && !strcmp (readlen, "READ")
+		  && !strcmp (writelen, "WRITE")
+		  && !strcmp (cksum, "CKSUM"))
+		st++;
+	      break;
+	    case 1:
+	      if (!strcmp (name, poolname))
+		st++;
+	      break;
+	    case 2:
+	      if (strcmp (name, "mirror") && !sscanf (name, "mirror-%u", &dummy)
+		  && !sscanf (name, "raidz%u", &dummy)
+		  && !strcmp (state, "ONLINE"))
+		{
+		  if (ndevices >= devices_allocated)
+		    {
+		      devices_allocated = 2 * (devices_allocated + 8);
+		      devices = xrealloc (devices, sizeof (devices[0])
+					  * devices_allocated);
+		    }
+		  devices[ndevices++] = xasprintf ("/dev/%s", name);
+	        }
+	      break;
+	    }
+	}
+
       free (line);
     }